Sound communication system

Details Sound communication system Sound communication system

1977-09-16

1978-09-26

Claffy, Kathleen H.

179 1VE, H04B 140

Patent

active

041172620

ABSTRACT:
A system for combining a two-way radio, a siren for broadcast of plural siren sounds, a loudspeaker, a public address system, and a single microphone for both radio and public address use into an integrated sound communication system for use in an emergency vehicle or the like is disclosed, including a logic circuit for overriding all other communication modes when the system is placed in a public address mode.

REFERENCES:
patent: 2572221 (1951-10-01), Voight
patent: 3795769 (1974-03-01), Nowka et al.
patent: 3938043 (1976-02-01), Desai
patent: 4027249 (1977-05-01), Calman
patent: 4035589 (1977-07-01), Parke

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